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-rw-r--r--src/lib/util/disasmintf.cpp47
-rw-r--r--src/lib/util/disasmintf.h69
-rw-r--r--src/lib/util/timeconv.h83
3 files changed, 192 insertions, 7 deletions
diff --git a/src/lib/util/disasmintf.cpp b/src/lib/util/disasmintf.cpp
new file mode 100644
index 00000000000..9699f68e823
--- /dev/null
+++ b/src/lib/util/disasmintf.cpp
@@ -0,0 +1,47 @@
+#include "disasmintf.h"
+
+util::u32 util::disasm_interface::interface_flags() const
+{
+ return 0;
+}
+
+util::u32 util::disasm_interface::page_address_bits() const
+{
+ throw ("unimplemented page_address_bits called");
+}
+
+util::u32 util::disasm_interface::page2_address_bits() const
+{
+ throw ("unimplemented page2_address_bits called");
+}
+
+util::disasm_interface::offs_t util::disasm_interface::pc_linear_to_real(offs_t pc) const
+{
+ throw ("unimplemented pc_linear_to_real called");
+}
+
+util::disasm_interface::offs_t util::disasm_interface::pc_real_to_linear(offs_t pc) const
+{
+ throw ("unimplemented pc_real_to_linear called");
+}
+
+util::u8 util::disasm_interface::decrypt8(u8 value, offs_t pc, bool opcode) const
+{
+ throw ("unimplemented decrypt8 called");
+}
+
+util::u16 util::disasm_interface::decrypt16(u16 value, offs_t pc, bool opcode) const
+{
+ throw ("unimplemented decrypt16 called");
+}
+
+util::u32 util::disasm_interface::decrypt32(u32 value, offs_t pc, bool opcode) const
+{
+ throw ("unimplemented decrypt32 called");
+}
+
+util::u64 util::disasm_interface::decrypt64(u64 value, offs_t pc, bool opcode) const
+{
+ throw ("unimplemented decrypt64 called");
+}
+
diff --git a/src/lib/util/disasmintf.h b/src/lib/util/disasmintf.h
new file mode 100644
index 00000000000..908bd762bdb
--- /dev/null
+++ b/src/lib/util/disasmintf.h
@@ -0,0 +1,69 @@
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+/***************************************************************************
+
+ disasmintf.h
+
+ Generic disassembler interface.
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef MAME_UTIL_DISASMINTF_H
+#define MAME_UTIL_DISASMINTF_H
+
+#include "coretmpl.h"
+
+namespace util {
+// class implementing a disassembler
+class disasm_interface
+{
+public:
+ using offs_t = u32;
+
+ // Disassembler constants for the return value
+ static constexpr u32 SUPPORTED = 0x80000000; // are disassembly flags supported?
+ static constexpr u32 STEP_OUT = 0x40000000; // this instruction should be the end of a step out sequence
+ static constexpr u32 STEP_OVER = 0x20000000; // this instruction should be stepped over by setting a breakpoint afterwards
+ static constexpr u32 OVERINSTMASK = 0x18000000; // number of extra instructions to skip when stepping over
+ static constexpr u32 OVERINSTSHIFT = 27; // bits to shift after masking to get the value
+ static constexpr u32 LENGTHMASK = 0x0000ffff; // the low 16-bits contain the actual length
+
+ static inline u32 step_over_extra(u32 x) {
+ return x << OVERINSTSHIFT;
+ }
+
+ class data_buffer {
+ public:
+ virtual ~data_buffer() = default;
+ virtual u8 r8 (offs_t pc) const = 0;
+ virtual u16 r16(offs_t pc) const = 0;
+ virtual u32 r32(offs_t pc) const = 0;
+ virtual u64 r64(offs_t pc) const = 0;
+ };
+
+ enum {
+ NONLINEAR_PC = 0x00000001,
+ PAGED = 0x00000002,
+ PAGED2LEVEL = 0x00000006,
+ INTERNAL_DECRYPTION = 0x00000008,
+ SPLIT_DECRYPTION = 0x00000018
+ };
+
+ virtual u32 interface_flags() const;
+ virtual u32 page_address_bits() const;
+ virtual u32 page2_address_bits() const;
+ virtual offs_t pc_linear_to_real(offs_t pc) const;
+ virtual offs_t pc_real_to_linear(offs_t pc) const;
+ virtual u8 decrypt8 (u8 value, offs_t pc, bool opcode) const;
+ virtual u16 decrypt16(u16 value, offs_t pc, bool opcode) const;
+ virtual u32 decrypt32(u32 value, offs_t pc, bool opcode) const;
+ virtual u64 decrypt64(u64 value, offs_t pc, bool opcode) const;
+
+ virtual u32 opcode_alignment() const = 0;
+ virtual offs_t disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer &params) = 0;
+};
+}
+
+#endif
diff --git a/src/lib/util/timeconv.h b/src/lib/util/timeconv.h
index 7f9a7830b8e..365af8c19fb 100644
--- a/src/lib/util/timeconv.h
+++ b/src/lib/util/timeconv.h
@@ -17,6 +17,7 @@
#include "coreutil.h"
#include <chrono>
+#include <algorithm>
namespace util {
@@ -35,6 +36,21 @@ typedef std::chrono::duration<std::uint64_t, std::ratio<1, 10000000> > ntfs_dura
//---------------------------------------------------------
+// arbitrary_datetime
+//---------------------------------------------------------
+
+struct arbitrary_datetime
+{
+ int year; // absolute year (1900 AD = 1900)
+ int month; // month (1-12)
+ int day_of_month; // day of month (1-31)
+ int hour; // hour (0-23)
+ int minute; // minute (0-59)
+ int second; // second (0-59)
+};
+
+
+//---------------------------------------------------------
// arbitrary_clock - an std::chrono clock that "knows" the
// date of the epoch's begining
//---------------------------------------------------------
@@ -55,6 +71,17 @@ public:
static constexpr int base_second = S;
//---------------------------------------------------------
+ // from_arbitrary_datetime - converts an
+ // from_arbitrary_datetime to this arbitrary_clock's scale
+ //---------------------------------------------------------
+
+ static time_point from_arbitrary_datetime(const arbitrary_datetime &dt, bool clamp)
+ {
+ return time_point(duration_from_arbitrary_datetime(dt, clamp));
+ }
+
+
+ //---------------------------------------------------------
// from_arbitrary_time_point - converts an arbitrary_clock
// with a different scale to this arbitrary_clock's scale
//---------------------------------------------------------
@@ -62,13 +89,15 @@ public:
template<typename Rep2, int Y2, int M2, int D2, int H2, int N2, int S2, typename Ratio2>
static time_point from_arbitrary_time_point(const std::chrono::time_point<arbitrary_clock<Rep2, Y2, M2, D2, H2, N2, S2, Ratio2> > &tp)
{
- const int64_t our_absolute_day = absolute_day(Y, M, D);
- const int64_t their_absolute_day = absolute_day(Y2, M2, D2);
-
- const auto our_fract_day = std::chrono::hours(H) + std::chrono::minutes(N) + std::chrono::seconds(S);
- const auto their_fract_day = std::chrono::hours(H2) + std::chrono::minutes(N2) + std::chrono::seconds(S2);
-
- const std::chrono::duration<Rep, Ratio> adjustment(std::chrono::hours(24) * (their_absolute_day - our_absolute_day) + (their_fract_day - our_fract_day));
+ arbitrary_datetime dt;
+ dt.year = Y2;
+ dt.month = M2;
+ dt.day_of_month = D2;
+ dt.hour = H2;
+ dt.minute = N2;
+ dt.second = S2;
+
+ const duration adjustment = duration_from_arbitrary_datetime(dt, false);
const duration result_duration = std::chrono::duration_cast<duration>(tp.time_since_epoch() + adjustment);
return time_point(result_duration);
}
@@ -142,6 +171,46 @@ private:
// end of every quadcentury
typedef arbitrary_clock<std::int64_t, 1601, 1, 1, 0, 0, 0, std::ratio<1, 1> > tm_conversion_clock;
+
+ //---------------------------------------------------------
+ // clamp_or_throw
+ //---------------------------------------------------------
+
+ static int clamp_or_throw(int value, int minimum, int maximum, bool clamp, const char *out_of_range_message)
+ {
+ if (value < minimum || value > maximum)
+ {
+ if (clamp)
+ value = std::min(std::max(value, minimum), maximum);
+ else
+ throw std::out_of_range(out_of_range_message);
+ }
+ return value;
+ }
+
+ //---------------------------------------------------------
+ // duration_from_arbitrary_datetime - converts an
+ // arbitrary_datetime to this arbitrary_clock's duration
+ //---------------------------------------------------------
+
+ static duration duration_from_arbitrary_datetime(const arbitrary_datetime &dt, bool clamp)
+ {
+ // range checking
+ const int month = clamp_or_throw(dt.month, 1, 12, clamp, "invalid dt.month");
+ const int day_of_month = clamp_or_throw(dt.day_of_month, 1, gregorian_days_in_month(month, dt.year), clamp, "invalid dt.day_of_month");
+ const int hour = clamp_or_throw(dt.hour, 0, 23, clamp, "invalid dt.hour");
+ const int minute = clamp_or_throw(dt.minute, 0, 59, clamp, "invalid dt.minute");
+ const int second = clamp_or_throw(dt.second, 0, 59, clamp, "invalid dt.second");
+
+ const int64_t our_absolute_day = absolute_day(Y, M, D);
+ const int64_t their_absolute_day = absolute_day(dt.year, month, day_of_month);
+
+ const auto our_fract_day = std::chrono::hours(H) + std::chrono::minutes(N) + std::chrono::seconds(S);
+ const auto their_fract_day = std::chrono::hours(hour) + std::chrono::minutes(minute) + std::chrono::seconds(second);
+
+ return std::chrono::duration<Rep, Ratio>(std::chrono::hours(24) * (their_absolute_day - our_absolute_day) + (their_fract_day - our_fract_day));
+ }
+
//---------------------------------------------------------
// internal_to_tm - formats a structure of type 'struct tm'
// based on a normalized clock